The planet Kaf has twice the amount of oxygen as Earth. This means that higher elevations are more livable but many arthropods like bugs and spiders can be much bigger.
Many extinct animals survive here due to being brought from Earth when they still existed. A few others dropped here by falling into rifts in time that pop up every now and again.
The moon, Qarin is three times bigger than the Earth’s moon. In fact, it is so big it has it’s own atmosphere.
There are eight trees with multicolor bark around the world which manage and recirculate the world’s mana (magic power) into ley lines.
There is a mountain range where nearly all of the mountains are composed of emerald crystals.